diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index 3ce8a56a..2098afed 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -45,4 +45,5 @@ jobs:
                 with:
                     coverageCommand: ./gradlew allcoverage
                     coverageLocations: ${{github.workspace}}/build/reports/jacoco/report.xml:jacoco
+                    prefix: src/main/java
                     debug: true